A sociologist is interested in whether marital status influences how many vacation days a person takes a year. They examine four types of marital status (namely single, married, separated/divorced, and widowed) and take a sample of 31 people of each type. To test the null hypothesis of no mean differences in the number of vacation days across the marital status types, what method should you use

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

30 people weigh 160 pounds or more

move it to the other side

step-by-step explanation: